[MacPorts] #50678: makeicns does not build on Snow Leopard with libc++

[MacPorts]

#50678: makeicns does not build on Snow Leopard with libc++
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  Reporter:  steven.dwyer@…  |      Owner:  mk@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.4
Resolution:                  |   Keywords:  snowleopard
      Port:  makeicns        |
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Comment (by jeremyhu@…):

 (well, short of updating these ports to not use the SDK unless they're
 explicitly told to).

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Ticket URL: <https://trac.macports.org/ticket/50678#comment:9>
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